Did you know that on Friday nights, when the map view becomes cluttered with many orders, you can toggle some switches to remove the orders that are already assigned and in progress? The remaining orders will be the ones that you still need to allocate to a group or assign to a driver.
Map Showing All Orders
Map Showing Unassigned Orders Only
With the "Assigned" and "En Route" toggles set to off, it is much easier to group and assign the rest of the orders as you are only looking at the blue squares which represent the orders that still need to be dealt with.